Séminaire Logique mathématique ICJ

Schlichting's Theorem for Approximate Subgroups

par Tingxiang Zou (ICJ)

Europe/Paris
Salle 112 Bât Braconnier

Salle 112 Bât Braconnier

Description

In this talk, we will present the proof of Schlichting's theorem for approximate subgroups. In an ambient group, an approximate subgroup is a subset which behaves like a subgroup "up to a constant error". Schlichting's theorem states that if there is a uniform family of commensurable approximate subgroups in an ambient group, then there exists an invariant one which is commensurable with any member of this family.